511325251 has 4 divisors (see below), whose sum is σ = 512959192. Its totient is φ = 509691312.

The previous prime is 511325233. The next prime is 511325263. The reversal of 511325251 is 152523115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511325251 - 2¹¹ = 511323203 is a prime.

It is a super-2 number, since 2×511325251² = 522907024620426002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511325951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816501 + ... + 817126.

It is an arithmetic number, because the mean of its divisors is an integer number (128239798).

Almost surely, 2^511325251 is an apocalyptic number.

511325251 is a deficient number, since it is larger than the sum of its proper divisors (1633941).

511325251 is a wasteful number, since it uses less digits than its factorization.

511325251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1633940.

The product of its digits is 1500, while the sum is 25.

The square root of 511325251 is about 22612.5020950801. The cubic root of 511325251 is about 799.6484137357.

Adding to 511325251 its reverse (152523115), we get a palindrome (663848366).

The spelling of 511325251 in words is "five hundred eleven million, three hundred twenty-five thousand, two hundred fifty-one".